Regulator for furnaces.



e. M. TAGGAHT.

REGULATOR FOR FURNACES. APPLICATION EILED JULY 16. 1918.

- 1,300,788. Patented Apr. 15,1919.

2 SHEFTSSHEET le. M. TAGGABL REQULATOR FOR FURNACES. APPLICATION FILEDJULY 16. 1918.

1,300,788. Patented Apr. 15,1919. V 2 SHEETS-SHEET 2.

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gwuamtoz GEORGE M. TAGGALRT, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OFONE-HALF T0 SILAS H. YERKES, OF PHILADELPHIA, PENNSYLVANIA.

REGULATOR FOR FURNACES.

Application filed July 16, 1918.

To all whom/it may concern:

Be it known that I, GEORGE M. TAGGART, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented,

a furnace until after they have been burnt.

Thus my invention serves as a fuel economizer due to the retention ofthe gases and other products of combustion until they have been consumedwithin'the furnace.

Another object is to so construct my invention that it can be regulatedto properly proportion the amount of draft to the chimney from thefurnace during the normal operation of the furnace. I

A still further object is to makemy invention of a simple and durableconstruction and so that it can be quickly and cheaply applied tofurnaces, stoves, and heaters of various descriptions.

These objects, and other advantageous ends which will be describedhereinafter, I attain in the following manner, reference being had tothe accompanying drawing in which V Figure 1 is a side elevation of afurnace having my invention attached thereto.

Fig. 2 is an enlarged side elevation of my invention, 7 r

.i Fig. 3 is aninverted plan View of Fig. 2, Fig. 4 is a sectionalelevation of my invention, and

r Fig. 5 is a sectional plan view taken on th line 55 of Fig. 4.

Referring to the drawings, 6 represents a furnace having an outletflue'pipe 7 which extends to the chimney (not illustrated).

The device of my invention is interposed between twosections 8 and 9 ofthe flue 7 and, specifically, consists of an upwardly tapered box 10which isrectangular in cross section, as shown in Fig. 5.

Specification of Letters Patent.

Patented Apr. 15, 1919.

Serial No. 245,171.

This box includes a bottom plate 11 having a central hole 12 thereininto which fits a coupling collar 13 which is adapted for connectionwith the section 9 of the flue pipe 7. The box 10 at opposite sides ofthe plate 11 has openings 14 and 15. These openings permit air to enterthe box in an upward direction for a purpose hereinafter descibed.

The opposite sides 16 and 17 of the box 10 taper upwardly to the top 18,and the top 18 is intersected by an upper collar 19 which is adapted forattachment to the section 8 of the flue pipe 7 Two flat plates 20 and 21form regulating doors and have their lower edges pivotally mounted insockets 22 and 23, respectively, which are, in the present instance,illustrated as a part of the plate 11. The doors 20 and 21 are of suchsize as to extend from the level of the plate 11 to the top 18 when theplates are in vertical positions. Also, these doors 20 and 21 extendfrom side to side of the box, as clearly illustrated in Fig. 5. Thuswhen the doors 20 and 21 are in their vertical positions, as shown inFig. 4, they prevent air, which enters through the openings 14 and 15,from passing into communication with the interior of the upper collar19. Thus the openings 14 and 15 are cut ofl to the chimney. I

By the construction and arrangement of the doors 20 and 21, as abovedescribed, they are mounted so as to pivot on their lower edges withinthe sockets 22 and 23; hence the box 10 and has a two-armed'lever 25'connected thereto and positioned within the box. This lever 25 has itsopposite ends pivotally connected to the respective doors 20 and 21 bylinks 26 and 27. The outer ,end of the shaft 24 is provided with asegment 28 having a handle 29 thereon. The segment 28 has a slot 30concentric with the axis of the shaft 24, and a clamping bolt 31 extendsthrough the slot 30 into the front of the box 10 and by the use of thebolt 31 the segment 28 can be secured in various pivotal positions.

It will thus be noted that by moving the segment 28 by the handle 29 theshaft 24 will be rocked and the above connection will serve to move thedoors 20 and 21 toward or from each other within the box 10. Thus whenthe doors 20 and 21 are moved close to each other, for example as shownby the dot-and-dash line position in Fig. 4:, the outlet from thefurnace to the chimney will be narrowed and the draft through thefurnace will be reduced. At the same time air can enter through theopenings 14 and 15 so that there will be a suction produced due to thedraft of the chimney.

By having the doors 20 and 21 arranged as indicated they taper upwardlywhen moved together and thus serve as a check to keep the major portionof the gases and other products of combustion within the furnace untilthey have been burnt. Also, the tapered or inner position of the doors20 and 21 produces an injector for the products of combustion passingthrough the space between the upper ends of the doors so that after thegases pass upwardly beyond the doors they expand within a comparativelylarge space and thus tend to retard the upper'passage of the gasesthrough the section 9 of the flue pipe 7. The coupling collars 13 a nd19actually form continuations of the flue pipe 7.

It will be noted that the doors 20 and 21' perform two functions. Theyserve as restricting members for the gases and other products ofcombustion, and also serve as they are moved inwardly to contract orreduce the outlet passage for the gases, they proportionately increasethe opening or passageway for the incoming air. Hence it will beunderstood that by a single movement of the handle 29 in eitherdirection the proper amount of air and the proper outlet passage for thegases and products of com bustion can be secured.

In starting the fire it is preferable that the doors 20 and 21 be movedto their full open position, such for example as shown in full lines inFig. 4c. The arrangement of the doors permits a full draft to beattained for the reason that no portion of the plates are in the pathbetween the upper and lower collars.

After the fire has been oncestarted the doors 20 and 21 can be movedtoward each other to any extent according to the requirements of thefurnace.

In View of the fact that my. invention holds the gases of combustion inthe furnace until they are burnt, there will be practically no smokingof the furnace. 7

While I have described my invention as taking a particular form, it willbe understood that the-various parts of my invention may be changedwithout departing from the spirit thereof, and hence I do not myself tothe precise construction set forth, but consider that I am at liberty tomake such changes and alterations as fairly come within the scope of theappended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A device of the character described including a box having a bottomplate with a hole therein; a coupling collar adapted to fit within saidvhole; a coupling collar in communication with the top of said box andabove said first coupling collar whereby products of combustion can passthrough said first coupling collar, thence through said box, and finallyout through the top coupling collar, said plate having openingsoppositely disposed at both sides of said first coupling collar and opento the atmosphere, said box including sides tapering upwardly from saidplate at the outside of said openings and other plane parallel sidesextending between said first two sides; and plates having their bottomportions pivot ally mounted within said boxand adapted to be movedtoward each other between the planes of said parallel sides to vary theamount of products of combustion passingthrough said box and to permitair to pass through said box through said openings, substantially asdescribed.

2. A device of the character described in cluding'a box rectangular incross section I cline in opposite directions so that said sides taperupwardly from the bottom to the top edges thereof, the other sides ofsaid box' extending between said edges and extending at oppositelydisposed inclines to each other from the top to the bottom edges of saidfirst sides; a plate forming the bottom of said box and having a centralhole therein for attachment of a coupling collar, said plate extendingbetween and supporting the bottom edges of said box sides andhavingopenings between the bottom edges of said second mentioned sidesof the of said latter portion of the plate between In testimony whereofI have signed my the openings and said hole; and doors name to thisspecification in the presence 10 llnountedi within said biox aridhaviing tllieir of two subscribing witnesses.

ower e ges trunnione wit in sai soc ets whereby the upper edges of saiddoors can GEORGE TAGGART be moved toward and from each other in theWitnesses:

space above said hole, substantially as de- SILAS H. YERKES,

scribed. AUGUSTUS B. Corrns.

00p!" of this patent may be obtained for five cents each, by addressingthe commissioner of Patents.

wumnmn, D. 0.

